i have a 72 road runner that had the front and rear guards added on before the original owner purchased it new.
i talked with the original owners son. he showed me a pic of the car when they picked it up new. it had the guards on it but they aren't listed on the fender tag or build sheet. another interesting thing was when i restified it it had new fenders, door skins, and lots of bondo in it but the owner said it was never crashed when they owned it. they bought it it had 20 miles on it.